Owners and operators must maintain records in accordance with 24.0724 that are capable of demonstrating compliance with closure requirements under this section. The results of the excavation zone assessment required in 24.0772 must be maintain for at least 3 years after completion of permanent closure or change-in-service in one of the following ways:

(1) By the owners and operators who took the UST system out of service;

(2) By the current owners and operators of the UST system site; or

(3) By mailing these records to the implementing agency if they cannot be maintained at the closed facility.